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    <title>Results for Versions - 3028701</title>
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    <item>
      <title>Herzreaktionen auf Belastung bei kindlichen Langstreckenläufern</title>
      <pubDate>Thu, 01 Jan 1998 18:20:02 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4003533</link>
      <guid>https://sponet.de/sponet/Record/4003533</guid>
      <author>Rowland, T.</author>
      <author>Goff, D.</author>
      <author>Popowski, B.</author>
      <author>DeLuca, P.</author>
      <author>Ferrone, L.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Herz</dc:subject>
      <dc:subject>Kind</dc:subject>
      <dc:subject>Langstreckenlauf</dc:subject>
      <dc:subject>Nachwuchsleistungssport</dc:subject>
      <dc:subject>Sportphysiologie</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Rowland, T.</dc:creator>
      <dc:creator>Goff, D.</dc:creator>
      <dc:creator>Popowski, B.</dc:creator>
      <dc:creator>DeLuca, P.</dc:creator>
      <dc:creator>Ferrone, L.</dc:creator>
      <content:encoded><![CDATA[Cardiovascular responses to exercise in trained endurance child athletes have been largely unexplored. Doppler echocardiography was utilized to compare cardiac variables during progressive upright cycle exercise to exhaustion in trained male prepubertal distance runners (n = 8) and untrained control boys (n = 14). Athletes demonstrated a greater maximal stroke index and cardiac index. Stroke volume rose progressively with increasing workloads in the runners but remained stable beyond low intensities in the non-athletes. No significant differences in stroke volume were observed between the two groups at rest. This contrasts with the greater resting stroke volumes typically seen in adult endurance athletes compared to non-athletes. Likewise, values for maximal stroke index were less in the child runners than those typically seen in trained adults. This study demonstrated that the stroke volume response to exercise differs in boy runners compared to non-athletes. The findings also suggest quantitative differences in such responses between prepubertal and young adult athletes.]]></content:encoded>
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    <item>
      <title>Herzreaktionen bei Belastung von kindlichen Langstreckenläufern</title>
      <pubDate>Thu, 01 Jan 1998 18:20:02 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/3028701</link>
      <guid>https://sponet.de/sponet/Record/3028701</guid>
      <author>Rowland, T.</author>
      <author>Goff, D.</author>
      <author>Popowski, B.</author>
      <author>DeLuca, P.</author>
      <author>Ferroo, A.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Sportphysiologie</dc:subject>
      <dc:subject>Herz</dc:subject>
      <dc:subject>Funktion</dc:subject>
      <dc:subject>Nachwuchsleistungssport</dc:subject>
      <dc:subject>Kind</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:subject>Langstreckenlauf</dc:subject>
      <dc:subject>Erwachsene</dc:subject>
      <dc:format>Artikel</dc:format>
      <dc:creator>Rowland, T.</dc:creator>
      <dc:creator>Goff, D.</dc:creator>
      <dc:creator>Popowski, B.</dc:creator>
      <dc:creator>DeLuca, P.</dc:creator>
      <dc:creator>Ferroo, A.</dc:creator>
      <content:encoded><![CDATA[Mittels Doppler-Echokardiographie wurden Herzvariablen während ansteigender Fahrradergometrie (in aufrechter Haltung)  bis zur Erschöpfung von trainierten männlichen präpuberalen Langstreckenläufern (n=8) und untrainierten Jungen (n=14) verglichen. Die Sportler wiesen einen größeren maximalen Schlagindex und Herzindex auf. Das Schlagvolumen stieg bei den Läufern progressiv mit ansteigender Belastung an und blieb bei den Untrainierten bei niedrigen Intensitäten stabil. In Ruhe wurden zwischen beiden Gruppen beim Schlagvolumn keine Unterschiede festgestellt.  Bei Erwachsenen ist dieser Unterschied des größeren Ruheschlagvolumens zwischen Ausdauersportlern und Nichtsportlern typisch. Ebenso sind die Werte für den maximalen Schlagindex bei kindlichen Läufern kleiner als bei trainierten Erwachsenen.]]></content:encoded>
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